Question

我在xaml中有以下路径数据。我想从后面的代码中定义相同的路径数据。

<Path  Data="M 250,40 L200,20 L200,60 Z" />

Answer 1

来自Codebehind：

Path orangePath = new Path();

        PathFigure pathFigure = new PathFigure();

        pathFigure.StartPoint = new Point(250, 40);

        LineSegment lineSegment1 = new LineSegment();
        lineSegment1.Point = new Point(200, 20);
        pathFigure.Segments.Add(lineSegment1);

        LineSegment lineSegment2 = new LineSegment();
        lineSegment2.Point = new Point(200, 60);
        pathFigure.Segments.Add(lineSegment2);

        PathGeometry pathGeometry = new PathGeometry();
        pathGeometry.Figures = new PathFigureCollection();

        pathGeometry.Figures.Add(pathFigure);

        orangePath.Data = pathGeometry;

修改：

//我们必须将此设置为true才能将lineSegment2中的行绘制到起点

pathFigure.IsClosed = true;

Answer 2

您需要使用TypeConverter：

Path path = new Path();
string sData = "M 250,40 L200,20 L200,60 Z";
var converter = TypeDescriptor.GetConverter(typeof(Geometry));
path.Data = (Geometry)converter.ConvertFrom(sData);

Answer 3

免责声明：我只使用Path作为DataTemplate作为列表框。应该工作。

//of course the string could be passed in to a constructor, just going short route.
public class PathData
{
   public string Path { get { return "M 250,40 L200,20 L200,60 Z"; } }
}

void foo()
{
   var path = new Path() { Stroke = new SolidColorBrush(Colors.Black) };
   var data = new PathData();
   var binding = new Binding("Path") { Source=data, Mode=BindingMode.OneWay };
   path.SetBinding(Path.DataProperty, binding);
}

从silverlight中的代码定义路径数据

3 个答案: